Robot vacuum cleaner



FIG. 1 is a front perspective view of a robot vacuum cleaner showing ournew design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left-side view thereof;

FIG. 5 is a right-side view thereof;

FIG. 6 is a top plan view thereof,

FIG. 7 is a bottom plan view thereof;

FIG. 8 is an enlarged view of the encircled portion 8 in FIG. 1;

FIG. 9 is an enlarged view of the encircled portion 9 in FIG. 1;

FIG. 10 is an enlarged view of the encircled portion 10 in FIG. 1;

FIG. 11 is an enlarged view of the encircled portion 11 in FIG. 4; and,

FIG. 12 is an enlarged view of the encircled portion 12 in FIG. 7.

The even dashed broken lines illustrating portions of the robot vacuumcleaner form no part of the claimed design.

The dot-dash broken lines encircling portions of the robot vacuumcleaner in FIGS. 1, 4 and 7 and illustrated in enlarged views in FIGS.8-12 form no part of the claimed design.

CLAIM The ornamental design for a robot vacuum cleaner, as shown anddescribed.